div {
  color: pink;
}
nav div {
  border: 1px solid pink;
}
nav::after {
  content: "文字";
}
nav:nth-of-type(1) {
  font-size: 14px;
}
.items:nth-of-type(1) {
  font-size: 14px;
}
.items:nth-of-type(1)::after {
  content: "文字";
}
body {
  font-size: 19px;
}
.test {
  font-size: 24;
  width: 26vh;
  height: 26rem;
}
.test2 {
  font-size: 24px;
  width: 24px;
  height: 24rem;
}
